package cn.lyh.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.DefaultProperties;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

//===============================服务降级===================================
@Service
//@DefaultProperties(defaultFallback = "payment_Global_FallbackMethod")
public class PaymentService {
    public String paymentInfo_OK(Integer id){
        return "线程池："+Thread.currentThread().getName()+"paymentInfo_OK,id="+id+"\t哈哈哈";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeoutHandler",commandProperties = {
            @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })
//    @HystrixCommand
    public String paymentInfo_Timeout(Integer id){
        int timeoutNum = 5/0;
        try {
            TimeUnit.SECONDS.sleep(timeoutNum);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池："+Thread.currentThread().getName()+"paymentInfo_Timeout,id="+id+"\t哈哈哈,耗时："+timeoutNum;
    }

    public String paymentInfo_TimeoutHandler(Integer id){
        return "线程池："+Thread.currentThread().getName()+"系统繁忙或程序出错，请稍后再试,id="+id+"\t略略略";
    }

//    /**
//     * 全局fallback
//     * @return
//     */
//    public String payment_Global_FallbackMethod(){
//        return "Global异常处理信息，请稍后再试，o(╥﹏╥)o";
//    }



    //===============================服务熔断===================================
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name="circuitBreaker.enabled",value = "true"),//是否开启断路器
            @HystrixProperty(name="circuitBreaker.requestVolumeThreshold",value = "10"),//请求次数
            @HystrixProperty(name="circuitBreaker.sleepWindowInMilliseconds",value = "10000"),//时间窗口期
            @HystrixProperty(name="circuitBreaker.errorThresholdPercentage",value = "60")//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(Integer id){
        if(id<0){
            throw new RuntimeException("**********id不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t调用成功，流水号："+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id")Integer id){
        return "id不能为负数，请稍后再试 -----id:"+id;
    }
}
